<template>
  <div class="login_container">
    <div class="login_box">
<!--      头像区-->
      <div class="avatar_box">
        <div></div>
        <img src="../assets/logo.png">
      </div>
<!--      登录表单区-->
      <el-form ref="loginFormRef" label-width="0px" :rules="rules" :model="loginForm" class="login_form">
<!--       用户名-->
        <el-form-item prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
        </el-form-item>
<!--        密码-->
        <el-form-item prop="password">
          <el-input prefix-icon="iconfont icon-3702mima" v-model="loginForm.password" type="password"></el-input>
        </el-form-item>
<!--        按钮区-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  export default {
    name: "Login",
    data(){
      return{
        loginForm:{
          username:'admin',
          password:'123456'
        },
        rules:{
          //验证用户是否合法
          //注意这里的username一定要和V-model一样
          username: [
            { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 16 个字符', trigger: 'blur' }
          ],
          //验证密码是否合法
          password: [
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 3, max: 16, message: '长度在 3 到 16 个字符', trigger: 'blur' }
          ],

        }
      }
    },
    methods:{
      resetLoginForm(){
        this.$refs.loginFormRef.resetFields()
      },
      login(){
        this.$refs.loginFormRef.validate(async valid =>{
          //预校验，验证输入的是否合法
          if(!valid){
            return ;
          }
          //发起验证
          const {data:res} = await this.$http.post('login',this.loginForm);
          if(res.meta.status !==200) return this.$message.error('登入失败！');
          this.$message.success('登入成功！');

          window.sessionStorage.setItem('token',res.data.token);
          this.$router.push('/home');
        })
      }
    }

  }
</script>

<style lang="less" scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    /*下面这个是什么*/
    transform: translate(-50%,-50%);

    .avatar_box{
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #dddddd;
      position: absolute;
      left: 50%;
      /*这个就是自身的50%*/
      transform: translate(-50%,-50%);
      background-color: #ffffff;
      img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eeeeee;
      }
    }
  }

  .login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .btns{
    display: flex;
    justify-content: flex-end;
  }

</style>